Back-adjusting device



A. J. ADAMS. BACK Amusrma DEVICE.

APPLICATION FILED DEC. 17, 1919.

Patented Dec. 14, 1920.

UNITED STATES PATENT OFFICE.

ARTHUR J. ADAMS, OF BAY CITY, MICHIGAN, ASSIGNOR TO THE FULTON COMPANY, OF BAY CITY, MICHIGAN, A CORPORATION OF MICHIGAN.

BACK-ADJUSTING DEVICE.

Application filed December 17, 1919.

T 0 all whom it may ooucer'n:

Be it known that I, ARTHUR J. ADAMS, a citizen of the United States, residing at Bay City, in the county of Bay and State of Michigan, have invented a new and useful Improvement in Back-Adjusting Devices, of which the following is a specification. V

The present invention relates particularly to a back-adjusting device for perambulators; and the primary object is to provide a simple and inexpensive device of this character, which enables the back of a seat to be adjusted with the greatest facility.

The invention is illustrated, in its preferred embodiment, in the accompanying drawing, in which I Figure 1 represents a side elevational view of a back and seat equipped with the improved back-adjusting device, the back being shown bro-kenly; Fig. 2, a broken rear elevational view of the same; and Fig. 3, a broken perspective view, showing the adjusting mechanism.

In the illustration given, A represents a seat of a perambulator, which may be supported in any suitable manner, as by means of springs A; B, an adjustable back mounted on the rear portion .of the seat; and C, the improved back-adjusting mechanism.

The seat A may comprise a rectangular frame provided with a rear frame-member 1, in the form of a narrow board.

The back is shown as comprising a frame having side members 2, a lower end-member 2 and an upper end-member 2 The frame of the back is shown covered with wickerwork 8. The lower member 2 is connected, by pivot-clips 4, with the rear portion of the seat-frame.

The adjusting mechanism C comprises a socket-sector 5 applied at a central point to the rear portion of the seat-frame; a latchbar 6 mounted on the rear side of the back at the longitudinal center thereof and disposed parallel with the back; and lower and upper guides 7 and 8, respectively, carried by the back, the latch-bar 6 being adapted to work as a plunger in said guides.

The member 5 is in the form of a clip applied to the lower surface of the rear frame-member 1 of theseat. It may be conveniently formed of sheet-metal to afford a horizontal attaching flange 5 a vertical web 5, and a curved or segmental socket flange Specification of Letters Batent.

Patented Dec. 14., 1920.

Serial No. 345,609.

5, which is provided with a plurality of sockets 5 The flange 5 is firmly secured to the frame member 1 of the seat, as by means of screws, or bolts, 9. The flange 5 is disposed below the flange 5 and the flange 5 is provided with an elongated slot 5 through which the lower portion of the latch-bar may work freel The latch-bar 6 has its lower portions curved forwardly, or off-set edgewise, as indicated at 6 and the lower extremity of the latch-bar is provided with a reduced extension, or lug, 6", which is adapted to engage any one of the sockets 5 The upper end of the bar 6 is curved, as indicated, to provide a finger-piece 6.

The lower guide 7 is in the form of a clip applied to the lower cross-member 2 of the back. The upper guide 8 is in the form of a clip secured to the central portion of a metal bar 8*, whose end-portions are fastened to the side-members 2 of the frame of the back. The guides 7 and 8 are provided with slots through which the latch-bar 6 extends snugly, but freely enough to permit the bar 6 to move as a plunger. A spring 10, confined between the upper guide 8 and a stud 11, with which the bar 6 is equipped, tends to thrust the latch-bar downwardly and hold it in interlocking engagement with any one of the sockets 5 The downward movement of the latch-bar is limited by a shoulder 12, which is adapted to engage the upper surface of the segment 5.

From the description given, it will be understood that the back will be held securely in any adjusted position by means of a latch-bar. 'A change in adjustment can be readily effected by lifting the latch-bar by means of the finger and swinging the back about its pivots to a new position, allowing the lower end of the latch-bar to engage another socket or notch.

The construction described is simple, strong, and inexpensive, and enables the back to be adjusted with the greatest facility.

The foregoing description has been given for clearness of understanding only, and no unnecessary limitation should be understood therefrom, but the appended claims should be construed as broadly as permis-v sible, in view of the prior art.

WVhat I regard as new and desire to secure by Letters Patent is:

l. The combination with a seat and a back pivotally related thereto, of a clip applied to the lower side of the rear portion of the seat-frame and provided with a plurality of sockets and with a latch-bar guide above said sockets, and a latch-bar slidably connected with said back and extending through said guide, said latch-bar being adapted to engage any one of said sockets.

2. The combination with a seat and a back pivotally related thereto, of a clip applied to the lower side of the rear portion of said seat and provided with a latch-bar guide and a plurality of sockets, latch-bar guides carried by said back, and a latch-bar movable in said guides and having a forwardly curved lower end provided with means for enga ing said sockets.

3. he combination with a seat and a back pivotally related thereto, of guides carried by said back, a plunger-like latch-bar disposed substantially parallel with the back and working in said guides, and a socketmember secured to the rear portion of said seat comprising an upper flange secured to the seat, a web, and a curved lower flange provided with a plurality of sockets, said upper flange having an elongated slot therein through which the lower portion of the latch-bar works freely.

4;. A clip for the purpose set forth, comprising a web equipped at one edge with a flange provided with an elongated guideslot and provided also with attaching perforations, said web being equipped at the opposite edge with a curved flange underlying said first-named flange and provided with a plurality of sockets.

ARTHUR J. ADAMS. 

